Multifunctional nanobubbles carrying indocyanine green and paclitaxel for molecular imaging and the treatment of prostate cancer

Abstract Background Combining ultrasound imaging with photoacoustic imaging provides tissue imaging with high contrast and resolution, thereby enabling rapid, direct measurements and the tracking of tumour growth and metastasis. Moreover, ultrasound-targeted nanobubble destruction (UTND) provides an...

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Main Authors: Minmin Lan, Lianhua Zhu, Yixuan Wang, Daijia Shen, Kejing Fang, Yu Liu, Yanli Peng, Bin Qiao, Yanli Guo
Format: Article
Language:English
Published: BMC 2020-09-01
Series:Journal of Nanobiotechnology
Subjects:
Online Access:http://link.springer.com/article/10.1186/s12951-020-00650-1
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author Minmin Lan
Lianhua Zhu
Yixuan Wang
Daijia Shen
Kejing Fang
Yu Liu
Yanli Peng
Bin Qiao
Yanli Guo
author_facet Minmin Lan
Lianhua Zhu
Yixuan Wang
Daijia Shen
Kejing Fang
Yu Liu
Yanli Peng
Bin Qiao
Yanli Guo
author_sort Minmin Lan
collection DOAJ
description Abstract Background Combining ultrasound imaging with photoacoustic imaging provides tissue imaging with high contrast and resolution, thereby enabling rapid, direct measurements and the tracking of tumour growth and metastasis. Moreover, ultrasound-targeted nanobubble destruction (UTND) provides an effective way to deliver drugs, effectively increasing the content of the drug in the tumour area and reducing potential side effects, thereby successfully contributing to the treatment of tumours. Results In this study, we prepared multifunctional nanobubbles (NBs) carrying indocyanine green (ICG) and paclitaxel (PTX) (ICG-PTX NBs) and studied their applications in ultrasound imaging of prostate cancer as well as their therapeutic effects on prostate cancer when combined with UTND. ICG-PTX NBs were prepared by the mechanical oscillation method. The particle size and zeta potential of the ICG-PTX NBs were 469.5 ± 32.87 nm and − 21.70 ± 1.22 mV, respectively. The encapsulation efficiency and drug loading efficiency of ICG were 68% and 2.52%, respectively. In vitro imaging experiments showed that ICG-PTX NBs were highly amenable to multimodal imaging, including ultrasound, photoacoustic and fluorescence imaging, and the imaging effect was positively correlated with their concentration. The imaging effects of tumour xenografts also indicated that ICG-PTX NBs were of good use for multimodal imaging. In experiments testing the growth of PC-3 cells in vitro and tumour xenografts in vivo, the ICG-PTX NBs + US group showed more significant inhibition of cell proliferation and the promotion of cell apoptosis compared to the other groups (P < 0.05). Blood biochemical analysis of the six groups showed that the levels of aspartate aminotransferase (AST), phenylalanine aminotransferase (ALT), serum creatinine (CRE) and blood urea nitrogen (BUN) in the ICG-PTX NBs and the ICG-PTX NBs + US groups were significantly lower than those in the PTX group (P < 0.05). Moreover, H&E staining of tissue sections from vital organs showed no obvious abnormalities in the ICG-PTX NBs and the ICG-PTX NBs + US groups. Conclusions ICG-PTX NBs can be used as a non-invasive, pro-apoptotic contrast agent that can achieve multimodal imaging, including ultrasound, fluorescence and photoacoustic imaging, and can succeed in the local treatment of prostate cancer providing a potential novel method for integrated research on prostate cancer diagnosis and treatment.
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spelling doaj.art-f521585b9a264e37ba93650db871c1e72022-12-22T02:56:48ZengBMCJournal of Nanobiotechnology1477-31552020-09-0118111810.1186/s12951-020-00650-1Multifunctional nanobubbles carrying indocyanine green and paclitaxel for molecular imaging and the treatment of prostate cancerMinmin Lan0Lianhua Zhu1Yixuan Wang2Daijia Shen3Kejing Fang4Yu Liu5Yanli Peng6Bin Qiao7Yanli Guo8Department of Ultrasound, Southwest Hospital, Army Medical UniversityDepartment of Ultrasound, Southwest Hospital, Army Medical UniversityChongqing Medical UniversityDepartment of Ultrasound, Southwest Hospital, Army Medical UniversityDepartment of Ultrasound, Southwest Hospital, Army Medical UniversityDepartment of Ultrasound, Southwest Hospital, Army Medical UniversityDepartment of Ultrasound, Southwest Hospital, Army Medical UniversityChongqing Medical UniversityDepartment of Ultrasound, Southwest Hospital, Army Medical UniversityAbstract Background Combining ultrasound imaging with photoacoustic imaging provides tissue imaging with high contrast and resolution, thereby enabling rapid, direct measurements and the tracking of tumour growth and metastasis. Moreover, ultrasound-targeted nanobubble destruction (UTND) provides an effective way to deliver drugs, effectively increasing the content of the drug in the tumour area and reducing potential side effects, thereby successfully contributing to the treatment of tumours. Results In this study, we prepared multifunctional nanobubbles (NBs) carrying indocyanine green (ICG) and paclitaxel (PTX) (ICG-PTX NBs) and studied their applications in ultrasound imaging of prostate cancer as well as their therapeutic effects on prostate cancer when combined with UTND. ICG-PTX NBs were prepared by the mechanical oscillation method. The particle size and zeta potential of the ICG-PTX NBs were 469.5 ± 32.87 nm and − 21.70 ± 1.22 mV, respectively. The encapsulation efficiency and drug loading efficiency of ICG were 68% and 2.52%, respectively. In vitro imaging experiments showed that ICG-PTX NBs were highly amenable to multimodal imaging, including ultrasound, photoacoustic and fluorescence imaging, and the imaging effect was positively correlated with their concentration. The imaging effects of tumour xenografts also indicated that ICG-PTX NBs were of good use for multimodal imaging. In experiments testing the growth of PC-3 cells in vitro and tumour xenografts in vivo, the ICG-PTX NBs + US group showed more significant inhibition of cell proliferation and the promotion of cell apoptosis compared to the other groups (P < 0.05). Blood biochemical analysis of the six groups showed that the levels of aspartate aminotransferase (AST), phenylalanine aminotransferase (ALT), serum creatinine (CRE) and blood urea nitrogen (BUN) in the ICG-PTX NBs and the ICG-PTX NBs + US groups were significantly lower than those in the PTX group (P < 0.05). Moreover, H&E staining of tissue sections from vital organs showed no obvious abnormalities in the ICG-PTX NBs and the ICG-PTX NBs + US groups. Conclusions ICG-PTX NBs can be used as a non-invasive, pro-apoptotic contrast agent that can achieve multimodal imaging, including ultrasound, fluorescence and photoacoustic imaging, and can succeed in the local treatment of prostate cancer providing a potential novel method for integrated research on prostate cancer diagnosis and treatment.http://link.springer.com/article/10.1186/s12951-020-00650-1NanobubbleIndocyanine greenPaclitaxelUltrasound molecular imagingPhotoacoustic imagingProstate cancer
spellingShingle Minmin Lan
Lianhua Zhu
Yixuan Wang
Daijia Shen
Kejing Fang
Yu Liu
Yanli Peng
Bin Qiao
Yanli Guo
Multifunctional nanobubbles carrying indocyanine green and paclitaxel for molecular imaging and the treatment of prostate cancer
Journal of Nanobiotechnology
Nanobubble
Indocyanine green
Paclitaxel
Ultrasound molecular imaging
Photoacoustic imaging
Prostate cancer
title Multifunctional nanobubbles carrying indocyanine green and paclitaxel for molecular imaging and the treatment of prostate cancer
title_full Multifunctional nanobubbles carrying indocyanine green and paclitaxel for molecular imaging and the treatment of prostate cancer
title_fullStr Multifunctional nanobubbles carrying indocyanine green and paclitaxel for molecular imaging and the treatment of prostate cancer
title_full_unstemmed Multifunctional nanobubbles carrying indocyanine green and paclitaxel for molecular imaging and the treatment of prostate cancer
title_short Multifunctional nanobubbles carrying indocyanine green and paclitaxel for molecular imaging and the treatment of prostate cancer
title_sort multifunctional nanobubbles carrying indocyanine green and paclitaxel for molecular imaging and the treatment of prostate cancer
topic Nanobubble
Indocyanine green
Paclitaxel
Ultrasound molecular imaging
Photoacoustic imaging
Prostate cancer
url http://link.springer.com/article/10.1186/s12951-020-00650-1
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